On Sat, Feb 23, 2008 at 06:34:38PM -0800, Suresh Siddha wrote: > Split the FPU save area from the task struct. This allows easy migration > of FPU context, and it's generally cleaner. It also allows the following > two optimizations: > > 1) only allocate when the application actually uses FPU, so in the first > lazy FPU trap. This could save memory for non-fpu using apps. Next patch > does this lazy allocation. > > 2) allocate the right size for the actual cpu rather than 512 bytes always. > Patches enabling xsave/xrstor support (coming shortly) will take advantage > of this.
> if (next_p->fpu_counter>5) > - prefetch(&next->i387.fxsave); > + prefetch(FXSAVE(next_p)); Shouldn't that be prefetch(FXSAVE(next)); ? Roger -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
